Change room creation and joining code

scenes/game.gd

@@ -0,0 +1,28 @@
+extends Node
+class_name Game
+
+
+# This cannot be called in _ready because the multiplayer node is set *after* adding the node to the tree.
+func init_signals():
+	print("[Game] Initializing signals...")
+	multiplayer.connected_to_server.connect(_on_connected_to_server)
+	multiplayer.server_disconnected.connect(_on_server_disconnected)
+	multiplayer.connection_failed.connect(_on_connection_failed)
+	multiplayer.peer_connected.connect(_on_peer_connected)
+	multiplayer.peer_disconnected.connect(_on_peer_disconnected)
+
+
+func _on_connected_to_server():
+	print("{", multiplayer.multiplayer_peer.get_unique_id(), "} Connected to server!")
+
+func _on_server_disconnected():
+	print("{", multiplayer.multiplayer_peer.get_unique_id(), "} Server disconnected...")
+
+func _on_connection_failed():
+	print("{", multiplayer.multiplayer_peer.get_unique_id(), "} Connection failed...")
+
+func _on_peer_connected(peer_id: int):
+	print("{", multiplayer.multiplayer_peer.get_unique_id(), "} Peer connected: ", peer_id)
+
+func _on_peer_disconnected(peer_id: int):
+	print("{", multiplayer.multiplayer_peer.get_unique_id(), "} Peer disconnected: ", peer_id)

scenes/game.tscn

@@ -0,0 +1,9 @@
+[gd_scene load_steps=3 format=3 uid="uid://b4w6ungwwjxsg"]
+
+[ext_resource type="Script" path="res://scenes/game.gd" id="1_cdtng"]
+[ext_resource type="PackedScene" uid="uid://cwj0fyj6obj6r" path="res://scenes/multiple_players_tracker.tscn" id="2_f2gy2"]
+
+[node name="Game" type="Node"]
+script = ExtResource("1_cdtng")
+
+[node name="MultiplePlayersTracker" parent="." instance=ExtResource("2_f2gy2")]

scenes/main.gd

@@ -2,26 +2,85 @@ extends Node
 class_name Main
 
 
+@onready var scene_tree: SceneTree = get_tree()
 @onready var interface_instance: MarginContainer = $"Interface"
 
 const main_menu_scene: PackedScene = preload("res://scenes/main_menu.tscn")
 var main_menu_instance: MainMenu = null
 
+const game_scene: PackedScene = preload("res://scenes/game.tscn")
+var server_game_instance: Game = null
+var client_game_instance: Game = null
+
+
 func init_main_menu():
 	main_menu_instance = main_menu_scene.instantiate()
-	main_menu_instance.room_created.connect(_on_room_created)
-	main_menu_instance.room_joined.connect(_on_room_joined)
+	main_menu_instance.hosting_confirmed.connect(_on_hosting_confirmed)
+	main_menu_instance.connecting_confirmed.connect(_on_connecting_confirmed)
 	interface_instance.add_child(main_menu_instance)
 
+func deinit_main_menu():
+	main_menu_instance.queue_free()
 
-func _on_room_created(server: ENetMultiplayerPeer, client: ENetMultiplayerPeer):
-	print(server, client)
+func init_server_game(server_port: int):
+	server_game_instance = game_scene.instantiate()
+	server_game_instance.name = "Server"
+	add_child(server_game_instance, true)
+	
+	server_game_instance.init_signals()
+	
+	print("[Main] Creating server at: *:", server_port)
+	var smp: SceneMultiplayer = SceneMultiplayer.new()
+	var peer: ENetMultiplayerPeer = ENetMultiplayerPeer.new()
+	var error: Error = peer.create_server(server_port)
+	if error != OK or peer.get_connection_status() == MultiplayerPeer.CONNECTION_DISCONNECTED:
+		push_error(error)
+		return
+	
+	scene_tree.set_multiplayer(multiplayer, ^"/root/Main/Server")
+	smp.set_multiplayer_peer(peer)
 
-func _on_room_joined(client: ENetMultiplayerPeer):
-	print(client)
+func deinit_server_game():
+	var smp: SceneMultiplayer = scene_tree.get_multiplayer(^"/root/Main/Server")
+	smp.multiplayer_peer.close()
+	smp.multiplayer_peer = null
+	scene_tree.set_multiplayer(multiplayer, ^"/root/Main/Server")
+	server_game_instance.queue_free()
+
+func init_client_game(player_name: String, player_color: Color, server_address: String, server_port: int):
+	client_game_instance = game_scene.instantiate()
+	client_game_instance.name = "Client"
+	add_child(client_game_instance, true)
+	
+	client_game_instance.init_signals()
+	
+	print("[Main] Creating client connecting to: ", server_address, ":", server_port)
+	var smp = SceneMultiplayer.new()
+	var peer: ENetMultiplayerPeer = ENetMultiplayerPeer.new()
+	var error: Error = peer.create_client(server_address, server_port)
+	if error != OK or peer.get_connection_status() == MultiplayerPeer.CONNECTION_DISCONNECTED:
+		push_error(error)
+		return
+	
+	scene_tree.set_multiplayer(smp, ^"/root/Main/Client")
+	smp.set_multiplayer_peer(peer)
+
+func deinit_client_game():
+	var smp: SceneMultiplayer = scene_tree.get_multiplayer(^"/root/Main/Server")
+	smp.multiplayer_peer.close()
+	smp.multiplayer_peer = null
+	scene_tree.set_multiplayer(multiplayer, ^"/root/Main/Client")
+	client_game_instance.queue_free()
 
 
 func _ready():
 	init_main_menu()
 
+func _on_hosting_confirmed(player_name: String, player_color: Color, server_port: int):
+	deinit_main_menu()
+	init_server_game(server_port)
+	init_client_game(player_name, player_color, "127.0.0.1", server_port)
 
+func _on_connecting_confirmed(player_name: String, player_color: Color, server_address: String, server_port: int):
+	deinit_main_menu()
+	init_client_game(player_name, player_color, server_address, server_port)

scenes/main_menu.gd

@@ -2,8 +2,8 @@ extends Control
 class_name MainMenu
 
 
-signal room_created(server: ENetMultiplayerPeer, client: ENetMultiplayerPeer)
-signal room_joined(client: ENetMultiplayerPeer)
+signal hosting_confirmed(player_name: String, player_color: Color, server_port: int)
+signal connecting_confirmed(player_name: String, player_color: Color, server_address: String, server_port: int)
 
 
 enum MenuStage {
@@ -87,16 +87,10 @@ func deinit_server_menu():
 	server_menu_instance.queue_free()
 
 func _on_hosting_confirmed(port: int):
-	var server = ENetMultiplayerPeer.new()
-	server.create_server(port)
-	var client = ENetMultiplayerPeer.new()
-	client.create_client("127.0.0.1", port)
-	room_created.emit(server, client)
+	hosting_confirmed.emit(player_name, player_color, port)
 
 func _on_connecting_confirmed(address: String, port: int):
-	var client = ENetMultiplayerPeer.new()
-	client.create_client(address, port)
-	room_joined.emit(client)
+	connecting_confirmed.emit(player_name, player_color, address, port)
 
 
 func _ready():

scenes/multiple_players_tracker.gd

@@ -0,0 +1,34 @@
+extends MultiplayerSpawner
+class_name MultiplePlayersTracker
+
+# Requires the peer_id as data for the spawn function.
+
+
+func get_tracker_by_peer(peer_id: int) -> SinglePlayerTracker:
+	for child in find_children("", "SinglePlayerTracker", false):
+		if child.peer_id == peer_id:
+			return child
+	return null
+
+func init_tracker(peer_id: int) -> SinglePlayerTracker:
+	var existing_tracker: SinglePlayerTracker = get_tracker_by_peer(peer_id)
+	if existing_tracker != null:
+		return existing_tracker
+	var single_tracker_instance = spawn(peer_id) 
+	return single_tracker_instance
+
+
+func _ready():
+	spawn_function = _spawn_tracker
+
+func _spawn_tracker(data: Variant) -> Node:
+	print("Spawning ", data)
+	var single_tracker_scene: PackedScene = load(get_spawnable_scene(0))
+	var single_tracker_instance: SinglePlayerTracker = single_tracker_scene.instantiate()
+	single_tracker_instance.peer_id = data
+	return single_tracker_instance
+
+
+func _process(delta):
+	if multiplayer.is_server() and Input.is_action_just_pressed("ui_accept"):
+		spawn(1)

scenes/multiple_players_tracker.tscn

@@ -0,0 +1,9 @@
+[gd_scene load_steps=2 format=3 uid="uid://cwj0fyj6obj6r"]
+
+[ext_resource type="Script" path="res://scenes/multiple_players_tracker.gd" id="1_fxysy"]
+
+[node name="MultiplePlayersTracker" type="MultiplayerSpawner"]
+_spawnable_scenes = PackedStringArray("res://scenes/single_player_tracker.tscn")
+spawn_path = NodePath(".")
+spawn_limit = 32
+script = ExtResource("1_fxysy")

scenes/server_options_menu.gd

@@ -2,7 +2,7 @@ extends PanelContainer
 class_name ServerOptionsMenu
 
 
-@export var port: int = 27015
+@export var port: int = 12345
 
 signal hosting_confirmed(port: int)
 signal connecting_confirmed(address: String, port: int)

scenes/single_player_tracker.gd

@@ -0,0 +1,48 @@
+extends MultiplayerSynchronizer
+class_name SinglePlayerTracker
+
+## Emitted when the peer represented by this object connects.
+signal peer_has_connected
+
+## Emitted when the peer represented by this object connects.
+signal peer_has_disconnected
+
+
+## The peer ID that this object represents.
+var peer_id: int = 0
+
+## Whether the peer is connected or not.
+var peer_connected: bool = false:
+	get:
+		return peer_connected
+	set(value):
+		var pvalue = peer_connected
+		peer_connected = value
+		if value != pvalue:
+			if value:
+				peer_has_connected.emit()
+			else:
+				peer_has_disconnected.emit()
+
+## The player's name.
+var player_name: String = "Player"
+
+## The player's color.
+var player_color: Color = Color.WHITE
+
+## This player's score, with an item per hole played.
+var strokes_per_hole: Array[int] = []
+
+
+func _ready():
+	replication_config = SceneReplicationConfig.new()
+	replication_config.add_property(^".:peer_id")
+	replication_config.property_set_replication_mode(^".:peer_id", SceneReplicationConfig.ReplicationMode.REPLICATION_MODE_ON_CHANGE)
+	replication_config.add_property(^".:peer_connected")
+	replication_config.property_set_replication_mode(^".:peer_connected", SceneReplicationConfig.ReplicationMode.REPLICATION_MODE_ON_CHANGE)
+	replication_config.add_property(^".:player_name")
+	replication_config.property_set_replication_mode(^".:player_name", SceneReplicationConfig.ReplicationMode.REPLICATION_MODE_ON_CHANGE)
+	replication_config.add_property(^".:player_color")
+	replication_config.property_set_replication_mode(^".:player_color", SceneReplicationConfig.ReplicationMode.REPLICATION_MODE_ON_CHANGE)
+	replication_config.add_property(^".:strokes_per_hole")
+	replication_config.property_set_replication_mode(^".:strokes_per_hole", SceneReplicationConfig.ReplicationMode.REPLICATION_MODE_ON_CHANGE)

scenes/single_player_tracker.tscn

@@ -0,0 +1,7 @@
+[gd_scene load_steps=2 format=3 uid="uid://drccgvtcng3ju"]
+
+[ext_resource type="Script" path="res://scenes/single_player_tracker.gd" id="1_jwlkv"]
+
+[node name="SinglePlayerTracker" type="MultiplayerSynchronizer"]
+root_path = NodePath(".")
+script = ExtResource("1_jwlkv")